Valmiki Ramayana Bala Kanda Sarga 51 Shloka 15
Original Shlokaनास्ति धन्यतरो राम त्वत्तोऽन्यो भुवि कश्चन। गोप्ता कुशिकपुत्रस्ते येन तप्तं महत्तप:।।1.51.15।।
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राम Rama, भुवि on this earth, त्वत्त: more than you, धन्यतर: more fortunate, अन्य: other, कश्चन none, नास्ति does not exist, येन by whom, महत् great, तप: austerities, तप्तम् having been performed, कुशिक पुत्र: son of Kusika, ते to you, गोप्ता protector.
Rama Son of Kushika (Viswamitra) who has performed great austerities is your protector. Therefore, there is none on this earth more fortunate than you.